Unholy smoke

Taking it to bits is correct. Mind the tube bell! The dag coating comes off if incorrect cleaner is used. Wipe it with very gentle cleaner. Brush off and clean the yoke coils with swabs and cleaner, don't attempt to remove that yoke. For circuit boards and shell, bezel and plastic bits, strong cleaner yet safe on plastics in low pressure sprayer followed by tap water then final rinse with distilled water. Wipe clean all the user control buttons and knobs, pots. PSU and CRT rear boards needs looking over for weak capacitors and replace as needed, redo whole CRT rear board on solder joints and resolder whole PSU, horizontal and vertical circuits. That will take care totally of any lurking problems. Cigarette stain/brown stuff is the worst of all I have to deal with. Clean once, bulk of it comes up, clean again, reminder still comes up then after 2 or 3 times later finally come clean and no smell. Cleaning out ANY machines of dirt, road dust, and/or cigarette smoke especially if everything is sticky not easily blown out is VERY TEDIOUS work. For average kind esp computer machines took me 8 hours each and tons of swabs, copious Hethyl Hydrate (very effective on cigarette stains) and Windex, paper towels, few pairs of surgical vinyl gloves. UGH! Wizard PS: watch that sucker cup with thick red cable on side of tube bell. Discharge it to ground strap that goes across the bell via 10W 1Meg resistor. Very oily and needs to be mechanically cleaned not fun if doing on circuit board and vent holes in shells by hand. Wizard